biology

Lang's red colobus

Lang's red colobus is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lang's red colobus rather than just read about it. In short: Lang's red colobus (Piliocolobus langi) is a species of red colobus monkey. Historically, it had been treated as a subspecies of the Central African red colobus, (P. foai) but more recent taxonomies generally treat it as a separate species.

Key takeaways

Lang's red colobus belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lang's red colobus to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lang's red colobus from memory before moving on to harder problems.

Reference excerpt

Lang's red colobus (Piliocolobus langi) is a species of red colobus monkey. Historically, it had been treated as a subspecies of the Central African red colobus, (P. foai) but more recent taxonomies generally treat it as a separate species. Lang's red colobus lives in lowland rainforest in the northeastern portion of the Democratic Republic of the Congo between the Lualaba River and the Aruwimi-Ituri River. It eats leaves, fruit, flowers, buds and possibly seeds. Males have a head and body length of about 50 cm (20 in) with a tail length of about 66.5 cm (26.2 in). Females have a head and body length of about 48.5 cm (19.1 in) with a tail length of between 44 and 66.5 cm (17.3 and 26.2 in). Males weigh about 9 kg (20 lb) and females weigh about 7.7 kg (17 lb).

References

Illustrations

Worked examples

Example 1 — a first encounter with Lang's red colobus

Start with the simplest possible case. Write down what Lang's red colobus claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lang's red colobus before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lang's red colobus ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lang's red colobus

In research: Lang's red colobus appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lang's red colobus in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lang's red colobus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arboreal mammals, Endemic fauna of the Democratic Republic of the Congo, IUCN Red List endangered species, so understanding it makes those chapters shorter.
In everyday life: Look for Lang's red colobus outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Lang's red colobus in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lang's red colobus means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lang's red colobus out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lang's red colobus in simple terms?

Why does Lang's red colobus matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lang's red colobus?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lang's red colobus.